Abrading machine



Oct. 21 1924.

B. W. KLEIN ABRADING MACHINE Filed June 19, 1923 INVENTOR fl W- 7% ATTORNEY Patented Oct. 21, 1924.

UNITED STATES BENJAMIN W. KLEIN,

ABRADING Application filed June 19,

T 0 all whom it may concern.

Be it known that I, BENJAMIN WV. KLEIN, a citizen of the United States, and resident of the city of New York, in the county of New York and State of New York, have invented certain new and useful Improvements in Abrading Machines, of which the following is a specification.

The present invention relates to improvements in abrading machines, such as are used in finishing the edges of shoe soles and heels.

In machines of this type the abrading wheels or cylinders are usually disposed within housings, means being provided for collecting loose particles of the grinder or work thrown off during the abrading operation, the last-mentioned means usually con sisting of a suction fan, delivering the loose particles into a container. In practice it has been found that some of the particles thrown off during the abrading operation adhere to the bottom of the housing, and, notwithstanding the fact that the said bottom is slanting, the suction fan does not remove the same, so that they are apt to leave the housing through the open end thereof, thereby endangering the health of the attendant and other persons in the room.

The main object of the present invention is to provide an attachment for abrading machines, which effectively prevents an adhesion of the loose particles of the grinder and work thrown off during the abrading operation to the housing, continuously scraping the same off the bottom of the housing, so that the fan is adapted to move or deliver the same into the receptacle, connected to the housing.

Another object of the invention is to provide an attachment of the type mentioned which is simple in construction, efiicient in operation and which requires but little power for operation.

WVith these and other objects in view, which will more fully appear as the nature of the invention is better understood, the same consists in the combination, arrangement and construction of parts hereinafter described, pointed out in the appended claims and illustrated in the accompanying drawings, it being understood that many changes may be made in the size and proportion of the several parts and details of PATENT OFFICE.

OF NEW YORK, N. Y.

MACHINE.

1923. Serial No. 646,888.

construction within the scope of the appended claims, without departing from the spirit or sacrificing any of the advantages of the invention.

One of the many possible embodiments of the invention is illustrated. in the accompanying drawings, in which Figure 1 is a front elevation of a portion of an abrading machine constructed in ac cordance with the present invention; Fig. 2 is a vertical section taken through one of the abrading wheels, its housing and the attachment constructed in accordance with this invention, on a larger scale; and Fig. 3 is a section taken on line 33 of Fig. 2.

Referring now to the drawings the numeral 10 indicates one of the transverse frame members of an abrading machine, provided with a bearing 11, in the latter being rotatably mounted a longitudinally extending shaft 12. This shaft may be driven in any suitable manner from any suitablesource of power, for instance by the intermediary of a belt, not shown, running over a pulley 13 on the said shaft. To the shaft is attached a plurality of abrading wheels or cylinders 14, each of the same being disposed within a housing 15, the front of which is open, as clearly shown in Figs. 1 and 3 of the drawings. These housings are each provided with a slanting bottom 16 and communicate with a tube 17 In this tube is inserted a housing 18, within which is disposed an exhaust fan, not shown, said fan collecting the loose particles of the grinder or work thrown off during the abrading operation into the housings l5 and forcing or delivering the same into a receptacle 18, shown in Fig. 1 of the drawings. Thus far the construction and operation of the elements are well known, so that a further detailed description thereof seems to be unnecessary.

Within each of the housings 15 is disposed a scraping means 19, comprising, in the case illustrated in the drawings, a rotary fan-like mechanism, including a long hub 20, on which are mounted radial fan blades 21, which are staggered longitudinally on the said hub, as clearly shown in Figs. 1 and 2 of the drawings. Each hub is fixed to a shaft 22, journaled in bearings 23 upon the sides of the respective housing 15, the last-mentioned shaft extending in parallel relation to the shaft 12 and being disaosed a substantial distance below the same, more particular y in a manner that the fan blades, in their rotation, are adapted to scrape the material from the bottom 16 of the housing 15. The length of each hub 20 corresponds to that of the width or the respective housing 15, and, since the fan blades are longitudinally staggered, they are adapted to scrape the loose particles from the bottom throughout the entire Width of the latter.

The shafts 22 are driven from the shaft 12 in any suitable manner, for instance each shaft L2 may have mounted thereon a pulley at, in alignment with a pulley 25 on the shaft 12. Over these pulleys runs a belt 26. The pulleys 2-4: are smaller than the pulleys 25, so that the scrapers will be rotated a high speed, taking into consideration that the grinding wheels or cylinders It usually revolve at a considerable speed.

The fan blades 21 are so shaped that, in their rotation, they *anse air to move through the open ends of the housings 15 toward the tube 17, thus producing an air current in addition to that developed by the exhaust fan of the abrading machine and aiding, therefore, in the removal of the loose. particles in the housing.

It is obvious that, while herein a specific scraping device has been described, any others inay be used without departing from the invention, which lies mainly in the provision of means Within the housing of an abrading wheel for the purposeof prevent-- ing the collection of loose particles on the lmiom or any other portion thereof.

hat I claim is:

1. An abrading machine including a rotary shaft, an abrading wheel thereon, a housing partly enclosing said wheel having its bottom disposed a substantial distance below said wheel, air current producing means connected with said housing acting constantly on said wheel, and scraping means within said housing in operative relation to said bottom for removing froin the inner face of said bottom particles of the grinder or worl; thrown oil during the abrading operation and thereby aiding said current producing means in collecting said particles.

2-. An abrading machine including a 1'0 tary shaft, an abrading whee], thereon, a housing partly enclosing said wheel having its lJOti'Lu'l'i disposed a substantial distance below said wheel, air current producing means connected with said housing acting constantly on said wheel, and rotary scra-ping means within said housing in operative relation to said bottom for removing from the inner face of said bottom particles of the grinder or work thrown 011' during the, abrading operation and thereby aiding said current producing means in collecting said particles.

Signed at New York, in the county of New Yor and State of New York, this 16th day of June, A. D. 1923.

BENJAMIN W. KLEIN. 

